Electromagnetic vibration and energy harvester
US12278537B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Jan 10, 2023 |
| Grant date | Apr 15, 2025 |
| Priority date | — |
| Expiry date | Oct 30, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K35/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for achieving a desired vibration resonance frequency of electromagnetic energy harvesters that includes the step of providing a harvester that includes a coil wound along a core, a magnet, a suspending device that includes a base connected to the body and a hinge connected to the magnet, and a stationary magnet attached to the body or the base when the positive poles of the magnets faces each other and the repulsive magnetic force between them restore the magnet. The gravity center of the hinge and the magnet is shifted off the rotation axis of the hinge so that body vibrations cause a relative alternating movement between the core and the magnet that creates alternating voltage between in the coil, and the step of determining the specific distance between the magnets based on the magnetic flux strength of the stationary magnet for achieving the desired frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.